Chains and heterogens:
PDB Chain Sequences:
>1a7j_ (-) mskkhpiisvtgssgagtstvkhtfdqifrregvkavsiegdafhrfnradmkaeldrry aagdatfshfsyeanelkelervfreygetgqgrtrtyvhddaeaartgvapgnftdwrd fdsdshllfyeglhgavvnsevniagladlkigvvpvinlewiqkihrdratrgytteav tdvilrrmhayvhcivpqfsqtdinfqrvpvvdtsnpfiarwiptadesvvvirfrnprg idfpyltsmihgswmsransivvpgnkldlamqliltplidrvvreskva
>1a7j_ (-) skkhpiisvtgsststvkhtfdqifrregvkavsiegdafhrfnradmkaeldrryaagd atfshfsyeanelkelervfreygetgqgrtrtyvartgvapgnftdwrdfdsdshllfy eglhgavvnsevniagladlkigvvpvinlewiqkihrdratrgytteavtdvilrrmha yvhcivpqfsqtdinfqrvpvvdtsnpfiarwiptadesvvvirfrnprgidfpyltsmi hgswmsransivvpgnkldlamqliltplidrvvreskv